| Reactivity | MuSpecies Glossary |
| Applications | Bioactivity |
| Details of Functionality | Measured by its ability to chemoattract BaF3 mouse pro‑B cells transfected with human CXCR3. The ED50 for this effect is 0.05-0.3 µg/mL. |
| Source | E. coli-derived mouse CXCL10/IP-10/CRG-2 protein Ile22-Pro98, with an N-terminal Met |
| Accession # | |
| N-terminal Sequence | Met |
| Protein/Peptide Type | Recombinant Proteins |
| Gene | Cxcl10 |
| Purity | >97%, by SDS-PAGE under reducing conditions and visualized by silver stain |
| Endotoxin Note | <0.01 EU per 1 μg of the protein by the LAL method. |
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| Theoretical MW | 8.8 kDa. Disclaimer note: The observed molecular weight of the protein may vary from the listed predicted molecular weight due to post translational modifications, post translation cleavages, relative charges, and other experimental factors. |
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| Storage | Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
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| Buffer | Lyophilized from a 0.2 μm filtered solution in Acetonitrile and TFA with BSA as a carrier protein. |
| Purity | >97%, by SDS-PAGE under reducing conditions and visualized by silver stain |
| Reconstitution Instructions | Reconstitute at 100 μg/mL in sterile PBS containing at least 0.1% human or bovine serum albumin. |
The gene for CRG-2, a mouse homolog of human IP-10, was originally identified as an immediate early gene induced in response to macrophage activation. It has since been shown that CRG-2 mRNA is induced by alpha / beta / gamma -interferons and by lipopolysaccharide in macrophages, astrocytes and microglia. Human IP-10 was also shown to be expressed in activated T-lymphocytes, splenocytes, keratinocytes, osteoblasts, astrocytes, and smooth muscle cells. Mouse CRG-2 cDNA encodes a 98 amino acid (aa) residue precursor protein with a 21 aa residue signal peptide that is cleaved to form the 77 aa residue secreted mature protein. Mature CRG-2 shares approximately 67% amino acid sequence identity with human IP-10. The amino acid sequence of CRG-2 identified the protein as a member of the chemokine alpha subfamily that lacks the ELR domain. CRG-2 has been shown to be a chemoattractant for activated T-lymphocytes. Recently, human IP-10 has also been reported to be a potent inhibitor of angiogenesis and to display a potent thymus-dependent anti-tumor effect. A chemokine receptor specific for IP-10 and MIG (CXCR3) has been cloned and shown to be highly expressed in IL-2-activated T-lymphocytes.
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